The 1992 and 1993 grand finals required the contestants to land a real plane.

"It'll do everything a real plane will," he said, standing next to the runway holding a small control box.

This is also one of the standard models of the real projective plane.

But parallel lines do not intersect in the real plane.

The line at infinity is added to the real plane.

Now, if its adversary gets real new American planes, it has to have them, too.

In other cases, real planes do not show up on the screens at all, or their images are in the wrong location.

The set of all such lines is itself a space, called the real projective plane in mathematics.

The next definition is suggested by the way coordinates are introduced into the real plane.

Usually they've got real planes in there, you know.